4[b-1]-7=12

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Solution for 4[b-1]-7=12 equation:


Simplifying
4[b + -1] + -7 = 12

Reorder the terms:
4[-1 + b] + -7 = 12
[-1 * 4 + b * 4] + -7 = 12
[-4 + 4b] + -7 = 12

Reorder the terms:
-4 + -7 + 4b = 12

Combine like terms: -4 + -7 = -11
-11 + 4b = 12

Solving
-11 + 4b = 12

Solving for variable 'b'.

Move all terms containing b to the left, all other terms to the right.

Add '11' to each side of the equation.
-11 + 11 + 4b = 12 + 11

Combine like terms: -11 + 11 = 0
0 + 4b = 12 + 11
4b = 12 + 11

Combine like terms: 12 + 11 = 23
4b = 23

Divide each side by '4'.
b = 5.75

Simplifying
b = 5.75

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